JPS5760787A - Optical recording and reproducing device - Google Patents
Optical recording and reproducing deviceInfo
- Publication number
- JPS5760787A JPS5760787A JP55135599A JP13559980A JPS5760787A JP S5760787 A JPS5760787 A JP S5760787A JP 55135599 A JP55135599 A JP 55135599A JP 13559980 A JP13559980 A JP 13559980A JP S5760787 A JPS5760787 A JP S5760787A
- Authority
- JP
- Japan
- Prior art keywords
- inputted
- switch
- digital information
- bit length
- picture information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title abstract 3
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24085—Pits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
Landscapes
- Television Signal Processing For Recording (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To perform recording and reproducing of a very low error occurrence rate, by setting the bit length of digital information required for retrieval of picture information to an integral multiple of the bit length of picture information. CONSTITUTION:Digital information is inputted from A to a shift register 1, and the parallel signal is converted to a series signal and is sent to a switch 5. Meanwhile, digitized picture information is inputted from B to a shift register, and the parallel signal is converted to a series signal and is sent to the switch 5 The switch 5 switches and sends picture information and digital information to an optical modulator 6 and modulates the laser beam applied from D to record them onto an optical disc 7. When the frequency of a clock pulse CLOCK inputted to registers 1 and 3 is denoted as f0, the frequency of the pulse inputted to the register 1 becomes f0/n (n is an integer) through an FF2. Consequently, since the bit length of digital information inputted to the switch 5 is (n) times as long as the bit length of picture information, digital information is recorded and reproduced in a low error occurrence rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55135599A JPS5760787A (en) | 1980-09-29 | 1980-09-29 | Optical recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55135599A JPS5760787A (en) | 1980-09-29 | 1980-09-29 | Optical recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5760787A true JPS5760787A (en) | 1982-04-12 |
Family
ID=15155580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55135599A Pending JPS5760787A (en) | 1980-09-29 | 1980-09-29 | Optical recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5760787A (en) |
-
1980
- 1980-09-29 JP JP55135599A patent/JPS5760787A/en active Pending
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